A&D AD-4212C-300 Liquid Dispensing Module for Precision Gravimetric Control

Overview

The A&D AD-4212C-300 is a purpose-built, high-speed gravimetric measurement module engineered for real-time liquid dispensing control in automated manufacturing environments. Unlike conventional benchtop analytical balances, this OEM-integrated module operates on precision electromagnetic force compensation (EMFC) principle—ensuring stable, drift-free mass readings under dynamic industrial conditions. Its core function is closed-loop feedback control of dispensed volume via mass gain monitoring, enabling traceable, quantitative verification of electrolyte filling, resin coating, sealant application, or lubricant dosing. Designed for integration into inline production systems—not standalone lab use—the AD-4212C-300 delivers metrological integrity compliant with ISO/IEC 17025 foundational requirements for in-process measurement systems. Its compact form factor and rapid stabilization (≤0.5 s) support high-throughput operations where cycle time and repeatability are governed by process validation protocols.

Key Features

• High-resolution EMFC sensor with 0.001 g readability and ≤0.001 g repeatability across the full 320 g capacity range
• Ultra-fast stabilization time of ≤0.5 seconds, enabling up to 50 stable mass readings per second for real-time process monitoring
• IP65-rated stainless-steel enclosure—resistant to dust ingress and low-pressure water jets—suitable for cleanroom Class 10,000 (ISO 8) and controlled manufacturing zones
• Minimal footprint: only 59 mm wide, facilitating installation in space-constrained equipment such as battery electrolyte fillers, inkjet coaters, or micro-dosing stations
• OEM-ready interface options including analog voltage/current output (0–10 V / 4–20 mA), digital comparator outputs (HI/GO/LO), and parallel BCD output for PLC synchronization
• Internal calibration mechanism with motor-driven weight actuation—no manual intervention required during routine operation or scheduled maintenance

Sample Compatibility & Compliance

The AD-4212C-300 is optimized for non-volatile, low-viscosity liquids and semi-fluids—including lithium-ion battery electrolytes, UV-curable resins, solder pastes, thermal interface materials, and precision lubricants—where mass-based dispensing eliminates volumetric errors induced by temperature-dependent density shifts or nozzle wear. It supports GMP-aligned documentation workflows through optional audit trail logging when integrated with validated SCADA or MES platforms. While not certified as a Class I, Division 1 hazardous-area device, its construction meets IEC 61000-6-2 (immunity) and IEC 61000-6-3 (emission) standards for industrial environments. The module complies with JIS B 7721 and ASTM E898-22 guidelines for performance verification of in-line weighing instruments used in regulated manufacturing.

Software & Data Management

As a hardware module, the AD-4212C-300 does not include embedded firmware-based software but provides deterministic, low-latency analog/digital signals compatible with third-party control systems. When interfaced with A&D’s optional GA-2000 series data acquisition units or industry-standard PLCs (e.g., Siemens S7-1200, Allen-Bradley CompactLogix), it supports timestamped data logging at user-defined intervals. For regulated environments, integration with 21 CFR Part 11-compliant electronic record systems requires external validation of the entire signal chain—including cabling, ADC resolution, sampling frequency, and data archival logic. Raw mass values are transmitted without internal averaging or filtering, preserving traceability to individual dispensing events.

Applications

• Lithium-ion battery cell manufacturing: real-time electrolyte fill verification and overfill detection
• FPD and semiconductor packaging: precise deposition control of underfill epoxies and die-attach adhesives
• Medical device assembly: gravimetric validation of silicone lubricant dosage on catheter shafts or syringe barrels
• Automotive electronics: consistent application of conformal coating materials on PCB subassemblies
• Pharmaceutical secondary packaging: verification of desiccant or excipient powder weight in blister cavities
• Micro-motor and bearing production: controlled oil impregnation volume per component

FAQ

Is the AD-4212C-300 suitable for use in explosion-proof environments?

No—it is not intrinsically safe or rated for hazardous locations. Installation must comply with local electrical safety codes and be physically isolated from flammable vapor zones.
Can this module perform automatic tare or zero tracking during continuous operation?

Yes—via programmable comparator logic or external controller commands; however, zero tracking is disabled by default to preserve measurement stability in vibration-prone settings.
Does the unit support GLP/GMP audit trail generation out-of-the-box?

No—audit trail functionality requires integration with a validated external system that captures timestamps, operator IDs, and change logs per 21 CFR Part 11 Annex 11 requirements.
What is the recommended recalibration interval under continuous production use?

A&D recommends functional verification before each shift and full internal calibration every 24 hours or after 1000 dispensing cycles—whichever occurs first—based on risk assessment per ISO 9001 clause 7.1.5.2.
Is the pan removable for cleaning or replacement?

Yes—the 50 mm × 50 mm stainless-steel pan is mechanically secured and field-replaceable using standard Torx tools; replacement pans maintain identical metrological characteristics.